Sofa



FIG. 1 is a front perspective view of a sofa embodying our new design.

FIG. 2 is a front elevational view of the design.

FIG. 3 is a top plan view of the design.

FIG. 4 is a rear elevational view of the design.

FIG. 5 is a side elevational view of the design, the opposite side being a mirror image thereof; and,

FIG. 6 is an enlarged, cutaway perspective view of a front corner of the design. 

The ornamental design for a sofa, as shown and described. 